28466986 has 16 divisors (see below), whose sum is σ = 44042760. Its totient is φ = 13799520.

The previous prime is 28466983. The next prime is 28467011. The reversal of 28466986 is 68966482.

It can be written as a sum of positive squares in 4 ways, for example, as 28462225 + 4761 = 5335^2 + 69^2 .

It is not an unprimeable number, because it can be changed into a prime (28466981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101166 + ... + 101446.

Almost surely, 2^28466986 is an apocalyptic number.

28466986 is a deficient number, since it is larger than the sum of its proper divisors (15575774).

28466986 is an frugal number, since it uses more digits than its factorization.

28466986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 320 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 28466986 is about 5335.4461856531. The cubic root of 28466986 is about 305.3377464302.

The spelling of 28466986 in words is "twenty-eight million, four hundred sixty-six thousand, nine hundred eighty-six".